自保护药芯焊丝韧化机理及电弧特性的研究进展

摘要/Abstract

摘要：

在回顾自保护药芯焊丝发展历程的基础上,重点介绍了自保护药芯焊丝焊缝金属的韧化机理。夹杂物对焊缝韧性的影响主要取决于夹杂物的形状和尺寸,尺寸在0.2~1.0μm之间的圆形夹杂物易成为针状铁素体（AF）的形核中心,有利于提高焊缝的韧性;高铝焊缝保持较高韧性的最佳铝氧比约为0.84;在药芯中加入适当的Li、Zr、Ti、B、Ni、Ce等元素,可改善焊缝的冲击韧性。此外,概括了自保护药芯焊丝的熔滴过渡模式和飞溅形成机理。

关键词:

自保护药芯焊丝, 韧化机理, 熔滴过渡, 飞溅

Abstract:

This paper focused on toughening mechanism of weld metal for self-shielded flux-cored wire after a review of development history of self-shielded flux-cored wire.Toughness impact of inclusion depended on its shape and sizes.Circular inclusion ranging from 0.2 to 1.0μm has a tendency to form AF core and

is favorable for toughness improvement.To maintain the relatively higher toughness, optimum ratio of aluminum to oxygen in weld metal is 0.84. The additions of trace element such as Li,Zr,Ti,B,Ni and Ce in flux-cored wire help to improve weld impact toughness.In addition, droplet transfer modes and formation mechanism of spatter was also summarized.

Key words: self-shielded flux-cored wire, toughening mechanism, droplet transfer, spatte

中图分类号:

TG442.3

宋绍朋, 栗卓新, 李国栋.

自保护药芯焊丝韧化机理及电弧特性的研究进展

[J]. 中国机械工程, 2010, 21(14): 1752-1757.

SONG Chao-Peng, LI Zhuo-Xin, LI Guo-Dong.

Research Progresses on Toughening Mechanism and Arc Characteristics of Self-shielded Flux-cored Wire

[J]. China Mechanical Engineering, 2010, 21(14): 1752-1757.

参考文献

[1]Landis G G. Method and Means for Bare Electrode Welding of Alloy Steels.. US,2909650[P]. 1959-10- 20.
[2]Marie Quintana[1],张鑑[2].自保护药芯焊丝的发展及在高强管线钢焊接中的应用[J].机械工人：热加工,2007(9):34-38.
[3]Mori N, Homma H, Okita S. Mechanism of Notch Toughness Improvement in Ti- B Bearing Weld Metals,IIW. DOC. ,IX-1196-81[R]. 1981.
[4]Ricks R A,Howell P R,Barritle G S. The Nature of Acicular Ferrite in HSLA Steel Weld Metals[J]. Journal of Materials Science, 1982,17(3) : 732-740.
[5]Court S A. Weld Metal Microstructure in Carbon Manganese Deposites[C]//Proc. of the International Conference on Quality and Reliability in Welding. Beijing:Welding Institute, China Mechanical Engineering Society, 1984 : 45-51.
[6]牛全峰.自保护药芯焊丝的研究[D].武汉理工大学,2005:
[7]王世亮,胡维平.低合金钢焊缝金属中的夹杂物及针状铁素体形核[J].焊接学报,1990,11(2):81-90.
[8]栗卓新[1],陈邦固[2],金立鸿[2],王秀文[2].自保护药芯焊丝熔敷金属韧化的机理[J].焊接学报,2001,22(4):5-8.
[9]Mills A R,Thewlis G,Whiteman J A. Nature of Inclusions in Steel Weld Metals and Their Influence on Formation of Acicular Ferrite[J]. Materials Science and Technology, 1999,3 (12) : 1051-1061.
[10]Abson D J. Non-- metallic Inclusion in Ferritic Steel Weld Metal--a Review[J]. Welding in the Word, 1989,27(3) : 31-57.
[11]Kotechi D J. Self- shielded Flux-- cored Electrode [D]. Cranfield: Cranfield Insitute of Technology, 1970.
[12]喻萍 [1],潘川 [2],薛锦 [1].铝对自保护药芯焊丝焊缝组织及力学性能的影响[J].西安交通大学学报,2004,38(9):951-954.
[13]Quintana M A, Mclane J, Babu S S, et al. Inclusion Formation in Self--shielded Flux Cored Arc Welds [J]. Welding Research, 2001,4 : 98-105.
[14]Cole W, Colvin P. Submerged Arc Welding of Higher Tensile Steel[J]. Met. Constr. and Bri. Weld J. , 1971,3(4) : 132-139.
[15]Babu S S,David S A,Quintana M A. Modeling Microstructure Development in Self-- shielded Flux Cored Arc Welds [ J ]. Welding Research, 2001,4 :91-97.
[16]Wang W,Liu S,Jones J E. Flux Cored Arc Welding: Arc Signals, Processing and Metal Transfer Characterization [ J ]. Welding Journal, 1995, 74 (11) :369-377.
[17]Ebert H W. Advances in Flux Cored Electrodes Reflected in New Classifications[J]. Welding Journal, 1998,77 (2) : 53-54.
[18]Yu Ping, Tian Zhiling, Pan Chuan, et al. Effects of CeF3 on Properties of Self--shielded Flux Cored Wire[J]. China Weldirlg (English Edition), 2006, 15(2) :31-33.
[19]胡强,熊第京.微量元素对自保护药芯焊丝熔敷金属韧性的影响[J].焊接,2000(2):15-18.
[20]李坤.几种组分对自保护药芯焊丝工艺性能和熔敷金属韧性的影响[D].机械科学研究院,2005:
[21]Munz R P,Quintana M A,Narayanan B K. Self-- shielded Flux Cored Electrode for Fracture Critical Applications .. US, 20060096966 A1 [P]. 2006 - 05 - 11.
[22]Gonzalez J, Young R F, Amata M A. Cored Type Welding Electrode: US, 4186293[P]. 1980-06-29.
[23]Parks J M. Lithium Containing Weld!ng Electrode: US,3742185[P]. 1973-06-26.
[24]张文钺,张智,陈邦固,等.一种低合金高韧性自保护药芯焊丝:中国,1117903A[P].1996-03-06.
[25]Yoshiya S, Yasuhiro N, Kazuo I, et al. Flux Cored Wire Electrodes for Self--shielded Arc Welding: US,4571480[P]. 1986-02-18.
[26]潘川喻萍李少华.自保护药芯焊丝熔滴过渡特点的研究.焊接技术应用与研秃,2007,36(8):59-60.
[27]金立鸿.一种含有聚偏氟乙烯树脂的自保护药芯焊丝:中国,101279409A[P].2008-10-08.
[28]栗卓新[1],皇甫平[1],陈邦固[2],金立鸿[2].自保护药芯焊丝熔滴过渡的控制[J].机械工程学报,2001,37(7):108-112.
[29]张征.自保护药芯焊丝及其熔滴过渡的研究 [D].北京工业大学,2007:
[30]潘川[1],喻萍[1],薛振奎[2],田志凌[1].自保护药芯焊丝飞溅的形成机理及其影响因素[J].焊接学报,2007,28(8):108-112.